6、替在他前面的先行词。11一、关系代词引导的定语从句1.who 指人,在定语从句中作主语。①The boys who are playing football are from Class One. ②Yesterday I helped an old man who had lost his way. ③ That is the teacher who teaches us physics. 2.whom 指人,在定语从句中做宾语,常可省略。①Mr Liu is the person ( whom ) you ta
7、lked about on the bus. ②Li Ming is just the boy ( whom ) I want to see. ③The professor ( whom ) you are waiting for has come. ④The girl ( whom ) the teacher often praises is our monitor. 注意:关系代词whom 在口语或非正式文体中常可用who 来代替,也可省略。The man ( whom / who )you met just now is
8、my old friend.3.which 指物,在定语从句中做主语或宾语,做宾语可省略。①Football is a game which is liked by most boys. ②The factory which makes comp